LOSS OF COOLING IF THIS TUBING JOINT LEAKS
Whirlpool Refrigerator Lokring 8 mm to 6 mm brass reducer/coupler, also cataloged as a sealed-system service valve or refrigerant tubing connector W11504420, Fixes Loss of cooling if this tubing joint leaks
Genuine Whirlpool sealed-system Lokring reducer/coupler joining 8 mm (5/16 in.) and 6 mm (1/4 in.) refrigerant tubing. The part is used in refrigerator and freezer sealed-system repairs.
Part W11504420Replaces W10890102, W10895723Whirlpool
Guaranteed to Fit — or your money back.
Confirm your full appliance model number before ordering.
Confirm your full appliance model number before ordering.
Is This the Right Part?
Part NumberW11504420
ReplacesW10890102, W10895723
ManufacturerWhirlpool
Appliance TypeRefrigerator
Part TypeLokring 8 mm to 6 mm brass reducer/coupler, also cataloged as a sealed-system service valve or refrigerant tubing connector
✅ Cross Reference Information
Current Part NumberW11504420
ReplacesW10890102, W10895723
Common Symptoms
- Refrigerator or freezer temperatures rise or fail to recover when a sealed-system refrigerant leak is present.
- An accessible tubing joint may show oily residue or physical damage; this is only an inspection clue and does not confirm that W11504420 is the failed part.
- A qualified sealed-system test may identify a refrigerant leak at the 8 mm-to-6 mm connection.
Check Before Replacing
- Confirm the exact appliance model's official repair-parts list calls for W11504420 (identified as 8/6 NR MS 00) at the applicable sealed-system tube junction before ordering or servicing.
- Without loosening, cutting, or disturbing refrigerant tubing, visually inspect any safely accessible connection area for obvious damage or oil residue.
- Have a qualified sealed-system technician evaluate cooling loss and perform refrigerant recovery, leak testing, and recharge as required; do not use symptoms alone to diagnose this coupler.
Pro Tip
Verify both the repair-parts diagram location and the tubing sizes: W11504420 is the brass 8 mm-to-6 mm reducing Lokring connector, not an interchangeable same-size connector.
Part Details
Part NumberW11504420
Part TypeLokring 8 mm to 6 mm brass reducer/coupler, also cataloged as a sealed-system service valve or refrigerant tubing connector
ManufacturerWhirlpool
Appliance TypeRefrigerator
Primary FunctionReduces and joins 8 mm and 6 mm sealed-system refrigerant tubing in a refrigerator/freezer refrigeration circuit.
Installation Notes
- This is a sealed-system repair involving refrigerant recovery and recharge; Whirlpool/Sears guidance supports service by a trained, licensed refrigeration/appliance technician.
- Use the specified Lokring connection method and appropriately sized professional tooling for the model-specific repair location.
- Do not substitute a different-size or different-material Lokring connector based only on appearance; follow the appliance's repair-parts documentation.
- For Whirlpool products using aluminum heat-exchanger tubing, Whirlpool specifies a Lokring connection rather than brazing for applicable sealed-system repairs.
Verified Compatible Models
10667802410, 10667803410, 10667809410, AZF33X16DW08, AZF33X18DW06, AZF33X20DW06, MZF34X18FW06, MZF34X20DW06, WRQA59CNKZ, WRT312CZJB00, WRT312CZJV00, WRT312CZJW00, WRT312CZJZ00, WSZ57L18DM06, WSZ57L18DM07, WSZ57L18DM08, WZF34X16DW08, WZF34X16DW09, WZF34X16DW10, WZF34X18DW07, WZF34X18DW08, WZF34X20DW04, WZF34X20DW05, WZF56R16DW09, WZF57R16FW09, WZF79R20DW07, WZF34X20DW06, WZF56R16DW10, WZF57R16FW10, WZF79R20DW08
Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.
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